Which of the following statements is false?
a. Neurons in the brain can interpret incoming action potentials only in certain ways.
b. Optic nerve impulses can only be interpreted as light.
c. Some sensory receptors do not convert a stimulus to nerve impulses.
d. The stronger the stimulus, the more action potentials are generated.
e. A strong stimulus activates many adjacent receptors, thereby increasing the number of
action potentials and the level of awareness for the stimulus.
C
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Some green algae exhibit alternation of generations. All land plants exhibit alternation of generations. No charophytes (stoneworts) exhibit alternation of generations
Keeping in mind the recent evidence from molecular systematics, the correct interpretation of these observations is that _____. A) charophytes are not related to either green algae or land plants B) plants evolved alternation of generations independently of charophytes C) alternation of generations cannot be beneficial to charophytes D) land plants evolved directly from the green algae that perform alternation of generations E) scientists have no evidence to indicate whether or not land plants evolved from any kind of alga
When you look at a phylogenetic tree of reptile classes, turtles, lizards and snake, and crocodiles are grouped together and birds are set off to the side but with a common ancestor for both groups. This would
A. be a monophyletic tree. B. be a paraphyletic tree. C. be a polyphyletic tree. D. have the taxonomy wrong because birds should be included with the others to make it a monophyletic tree. E. be a paraphyletic tree but the taxonomy wrong, because birds should be included with the others to make it a monophyletic tree.
The ability to control defecation is because the anal sphincter is made of:
a. skeletal muscle b. elastic connective tissue c. fibrous connective tissue d. tendon e. cardiac muscle
Which of the following lists ranks these molecules in the correct order by size?
A. water, sucrose, glucose, protein B. protein, water, glucose, sucrose C. water, protein, sucrose, glucose D. protein, sucrose, glucose, water E. glucose, water, sucrose, protein